7803718849 has 2 divisors, whose sum is σ = 7803718850. Its totient is φ = 7803718848.

The previous prime is 7803718831. The next prime is 7803718861. The reversal of 7803718849 is 9488173087.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7236564624 + 567154225 = 85068^2 + 23815^2 .

It is a cyclic number.

It is not a de Polignac number, because 7803718849 - 2¹³ = 7803710657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7803718849.

It is not a weakly prime, because it can be changed into another prime (7803718049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901859424 + 3901859425.

It is an arithmetic number, because the mean of its divisors is an integer number (3901859425).

Almost surely, 2^7803718849 is an apocalyptic number.

It is an amenable number.

7803718849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7803718849 is an equidigital number, since it uses as much as digits as its factorization.

7803718849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 7803718849 is about 88338.6599909688. The cubic root of 7803718849 is about 1983.5076118084.

The spelling of 7803718849 in words is "seven billion, eight hundred three million, seven hundred eighteen thousand, eight hundred forty-nine".